android - 填充 RecyclerView 时出现 ArrayIndexOutOfBoundsException

Question

当我尝试填充 RecyclerView 时，我经常遇到错误，但错误似乎发生在 StaggeredGridLayoutManager 内部。

我从我的数据库中填充 RecyclerView，然后使用这个将图像添加到我的适配器

List<WImage> images;

public void addImages(LinkedHashMap<Integer,WImage> newImages){
    for(Map.Entry<Integer,WImage> entry : newImages.entrySet()){
        addImage(entry.getValue(),entry.getKey());
    }
}

public void addImage(WImage image, int position){
    images.add(position,image);
    notifyItemRangeInserted(position, 1);

}

奇怪的是，当应用程序首次加载时它很好并正确显示所有内容，但如果我根据数据库查询将 RecyclerView 中当前的内容替换为一组不同的图像，然后再次返回初始图像，我得到这个错误。

java.lang.ArrayIndexOutOfBoundsException: src.length=16 srcPos=0 dst.length=0 dstPos=0 length=16
            at java.lang.System.arraycopy(Native Method)
            at android.support.v7.widget.StaggeredGridLayoutManager$LazySpanLookup.ensureSize(StaggeredGridLayoutManager.java:2277)
            at android.support.v7.widget.StaggeredGridLayoutManager$LazySpanLookup.offsetForAddition(StaggeredGridLayoutManager.java:2323)
            at android.support.v7.widget.StaggeredGridLayoutManager.handleUpdate(StaggeredGridLayoutManager.java:1280)
            at android.support.v7.widget.StaggeredGridLayoutManager.onItemsAdded(StaggeredGridLayoutManager.java:1253)
            at android.support.v7.widget.RecyclerView$5.dispatchUpdate(RecyclerView.java:406)
            at android.support.v7.widget.RecyclerView$5.onDispatchSecondPass(RecyclerView.java:422)
            at android.support.v7.widget.AdapterHelper.consumePostponedUpdates(AdapterHelper.java:119)
            at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:1896)
            at android.support.v7.widget.RecyclerView.resumeRequestLayout(RecyclerView.java:1101)
            at android.support.v7.widget.RecyclerView$1.run(RecyclerView.java:155)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
            at android.view.Choreographer.doCallbacks(Choreographer.java:574)
            at android.view.Choreographer.doFrame(Choreographer.java:543)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5086)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)

它很好地浏览了所有图像，但是当它准备好再次调用 onBindViewHolder 时它崩溃了。

当我更改 RecyclerView 中的数据时，我先删除所有内容，然后再填充查询中的新数据

public void removeAll(){
    images.clear();
    notifyDataSetChanged();
}

我也试过一次全部插入它们，然后用起始位置和图像总数调用 notifyItemRangeInserted，但它仍然因同样的错误而崩溃。

编辑

当我点击大约 20 个左右需要放入网格的项目时，它似乎会发生。如果我只是使用 notifyDatasetChanged 它似乎工作正常但我想使用 notifyItemRangeInserted 所以我得到了漂亮的插入动画

还有其他人遇到过这个问题吗？

EDIT2

这是我的onCreateViewHolder

@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, final int i) {

    View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.image_normal_grid_cell, viewGroup, false);
    return new ViewHolder(v);
}

和我的onBindViewHolder

@Override
public void onBindViewHolder(final ViewHolder holder, final int i) {
    final WImage image = images.get(i);
    holder.v.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            listener.onItemClick(v,i,image);
        }
    });

    holder.heart.setActivated(image.getLikeDislike());

    holder.heart.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Uri.Builder ub = SyncProvider.CONTENT_ID_URI_BASE.buildUpon();
            ub.appendPath(String.valueOf(image.getId()));
            ContentValues values = new ContentValues();

            if(image.getLikeDislike()){
                values.put(SyncProvider.LIKE,0);
                holder.heart.setActivated(false);
                image.setLikeDislike(false);
            }else{
                values.put(SyncProvider.LIKE,1);
                holder.heart.setActivated(true);
                image.setLikeDislike(true);
            }
            values.put(SyncProvider.IMAGE_CHANGED,1);
            context.getContentResolver().update(ub.build(),values,null,null);
        }
    });
    if(cancelPotentialDownload(image.getUri(),holder.imageview)){
        LoadImageTask task = new LoadImageTask(holder.imageview,image.getThumbUri());
        holder.imageview.setImageDrawable(new AsyncBitmap(task));
        task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
    }
}

编辑 3

这是我更换适配器时所做的

在我的抽屉导航的选定索引更改时，我初始化我的加载程序以进行查询

public void initLoader(int page){
    if(currentPage != page && mAdapter != null){
        mAdapter.removeAll();
        hashImages.clear();
        getLoaderManager().destroyLoader(currentPage);
    }
    currentPage = page;
    getLoaderManager().initLoader(page,null,this);
}

然后在加载程序的 onLoadFinished 中将对象添加到适配器

@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
    if(cursor != null && cursor.moveToFirst()){
            do{
                WImage image = new WImage(cursor);
                if(!hashImages.containsKey(image.getId())){
                    newImages.put(tempHash.size(),image);
                }else if(image.getImageChanged()){
                    update = true;
                }
                int pos = tempHash.size();
                tempHash.put(image.getId(),pos);
            }while(cursor.moveToNext());
        }

    if(newImages.size() > 0){
            mAdapter.addImages(newImages);
        }

Answer 1

Google 在 21.0.2 版本中已解决此错误:

compile "com.android.support:support-v4:21.0.2"
compile "com.android.support:recyclerview-v7:21.0.2"